bad sending unit in tank, or short in wireing.
In the gas tank
BUY A FORD
Check the ground to the tank. That may help
Float could be stuck in the tank or the ground wire on the tank is broke.
i would recommend getting gas when that happens. perhaps take it to the mechanic to fix the gauge
If your gas gauge reads full all the time, it could be due to a faulty fuel level sensor, which may be stuck or malfunctioning. Another possibility is a wiring issue, such as a short circuit, that is sending a constant signal to the gauge. Additionally, problems with the instrument cluster itself can also cause incorrect readings. It's best to have a mechanic diagnose the issue to determine the exact cause.
If the gas gauge reads a little over full when the tank is actually full on a 93 Geo Prizm, that is normal. Sometimes, when filling the tank, it will register over the full mark. The computer can be reset by disconnecting the battery for a few minutes if the tank is not actually full.
It would be better to write: My gas gauge reads empty. Note that 'gauge' is singular, so it needs the singular verb, reads. If you had several cars all with gas gauges that read empty, then the verb would be read.
it proply your sending unit in your gas tank drive safeI am having the same promblem with my 2006 Trailblazer. The research I did on it points to the sending unit.
why won't my gas gauge work all the time.it will read full when i fill it but after that as i drive i am not sure how much gas is in the tank
my 86 did the same never would read more than 1/4 tank after lots of checking things i replaced the gauge and it worked perfect..
check your conectors or the float might have a hole in it